<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<title></title>
		<script type="text/javascript" src="位置/js文件名.js" ></script>
	</head>
	<body>
		<Span>这是一个span标签</Span>
		<script>
			var a =1;
			var A = 2;
			alert(a);
			alert(A);
		  var long_name = " 这是一个由长命名的字符串变量";
			var j1 = "单词"
			alert(long_name);
			alert(j1);
		</script>
	</body>
</html>
